./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 18:55:33,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:55:33,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:55:33,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:55:33,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:55:33,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:55:33,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:55:33,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:55:33,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:55:33,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:55:33,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:55:33,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:55:33,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:55:33,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:55:33,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:55:33,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:55:33,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:55:33,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:55:33,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:55:33,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:55:33,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:55:33,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:55:33,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:55:33,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:55:33,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:55:33,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:55:33,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:55:33,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:55:33,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:55:33,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:55:33,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:55:33,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:55:33,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:55:33,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:55:33,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:55:33,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:55:33,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:55:33,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:55:33,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:55:33,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:55:33,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:55:33,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 18:55:33,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:55:33,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:55:33,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:55:33,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:55:33,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:55:33,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:55:33,407 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:55:33,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:55:33,408 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:55:33,409 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:55:33,410 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:55:33,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:55:33,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:55:33,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:55:33,411 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:55:33,412 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:55:33,412 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:55:33,412 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:55:33,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:55:33,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:55:33,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:55:33,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:55:33,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:55:33,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:55:33,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:55:33,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:55:33,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:55:33,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:55:33,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:55:33,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:55:33,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:55:33,417 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:55:33,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:55:33,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:55:33,418 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:55:33,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:55:33,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:55:33,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:55:33,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-20 18:55:33,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:55:33,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:55:33,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:55:33,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:55:33,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:55:33,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:55:37,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:55:37,884 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:55:37,884 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:55:37,906 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/ec3fd56cd/5eacbf2ea2bc4acabdbcc4b7f0ec657e/FLAG05463cf17 [2022-11-20 18:55:37,924 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/ec3fd56cd/5eacbf2ea2bc4acabdbcc4b7f0ec657e [2022-11-20 18:55:37,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:55:37,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:55:37,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:55:37,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:55:37,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:55:37,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:55:37" (1/1) ... [2022-11-20 18:55:37,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488b6356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:37, skipping insertion in model container [2022-11-20 18:55:37,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:55:37" (1/1) ... [2022-11-20 18:55:37,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:55:38,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:55:38,328 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-20 18:55:38,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:55:38,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:55:38,744 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-20 18:55:38,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:55:38,969 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:55:38,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38 WrapperNode [2022-11-20 18:55:38,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:55:38,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:55:38,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:55:38,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:55:38,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,131 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-20 18:55:39,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:55:39,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:55:39,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:55:39,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:55:39,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:55:39,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:55:39,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:55:39,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:55:39,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (1/1) ... [2022-11-20 18:55:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:55:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:55:39,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:55:39,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:55:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:55:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:55:39,960 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:55:39,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:57:49,324 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:57:49,366 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:57:49,366 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:57:49,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:49 BoogieIcfgContainer [2022-11-20 18:57:49,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:57:49,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:57:49,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:57:49,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:57:49,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:55:37" (1/3) ... [2022-11-20 18:57:49,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5954ff8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:49, skipping insertion in model container [2022-11-20 18:57:49,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:55:38" (2/3) ... [2022-11-20 18:57:49,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5954ff8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:49, skipping insertion in model container [2022-11-20 18:57:49,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:49" (3/3) ... [2022-11-20 18:57:49,385 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:57:49,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:57:49,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:57:49,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:57:49,505 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4ae4bd7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:57:49,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:57:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:57:49,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 18:57:49,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:49,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 18:57:49,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 18:57:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:57:49,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538130263] [2022-11-20 18:57:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:57:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:57:50,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 18:57:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 18:57:50,314 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 18:57:50,316 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 18:57:50,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 18:57:50,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 18:57:50,327 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 18:57:50,332 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 18:57:50,375 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 18:57:50,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:57:50 BoogieIcfgContainer [2022-11-20 18:57:50,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 18:57:50,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:57:50,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:57:50,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:57:50,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:49" (3/4) ... [2022-11-20 18:57:50,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 18:57:50,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:57:50,395 INFO L158 Benchmark]: Toolchain (without parser) took 132466.29ms. Allocated memory was 169.9MB in the beginning and 998.2MB in the end (delta: 828.4MB). Free memory was 136.3MB in the beginning and 425.7MB in the end (delta: -289.3MB). Peak memory consumption was 537.9MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,395 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:57:50,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1040.52ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 99.3MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 160.34ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 82.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,397 INFO L158 Benchmark]: Boogie Preprocessor took 124.72ms. Allocated memory is still 169.9MB. Free memory was 82.4MB in the beginning and 73.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,398 INFO L158 Benchmark]: RCFGBuilder took 130113.05ms. Allocated memory was 169.9MB in the beginning and 998.2MB in the end (delta: 828.4MB). Free memory was 73.2MB in the beginning and 468.7MB in the end (delta: -395.5MB). Peak memory consumption was 557.5MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,399 INFO L158 Benchmark]: TraceAbstraction took 1013.75ms. Allocated memory is still 998.2MB. Free memory was 467.6MB in the beginning and 425.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-20 18:57:50,399 INFO L158 Benchmark]: Witness Printer took 5.21ms. Allocated memory is still 998.2MB. Free memory is still 425.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:57:50,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1040.52ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 99.3MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 160.34ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 82.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 124.72ms. Allocated memory is still 169.9MB. Free memory was 82.4MB in the beginning and 73.2MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 130113.05ms. Allocated memory was 169.9MB in the beginning and 998.2MB in the end (delta: 828.4MB). Free memory was 73.2MB in the beginning and 468.7MB in the end (delta: -395.5MB). Peak memory consumption was 557.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1013.75ms. Allocated memory is still 998.2MB. Free memory was 467.6MB in the beginning and 425.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 5.21ms. Allocated memory is still 998.2MB. Free memory is still 425.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 210, overapproximation of bitwiseOr at line 205, overapproximation of bitwiseAnd at line 172. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 50; [L41] const SORT_2 var_81 = 10; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L49] SORT_1 input_82; [L50] SORT_1 input_92; [L51] SORT_1 input_98; [L52] SORT_1 input_122; [L53] SORT_1 input_125; [L54] SORT_1 input_126; [L55] SORT_1 input_127; [L56] SORT_1 input_128; [L57] SORT_1 input_147; [L58] SORT_1 input_148; [L59] SORT_1 input_170; [L60] SORT_1 input_174; [L61] SORT_1 input_216; [L62] SORT_1 input_219; [L63] SORT_1 input_240; [L64] SORT_1 input_261; [L66] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_2 init_7_arg_1 = var_5; [L102] state_6 = init_7_arg_1 [L103] SORT_2 init_9_arg_1 = var_5; [L104] state_8 = init_9_arg_1 [L105] SORT_2 init_11_arg_1 = var_5; [L106] state_10 = init_11_arg_1 [L107] SORT_2 init_13_arg_1 = var_5; [L108] state_12 = init_13_arg_1 [L109] SORT_2 init_15_arg_1 = var_5; [L110] state_14 = init_15_arg_1 [L111] SORT_2 init_17_arg_1 = var_5; [L112] state_16 = init_17_arg_1 [L113] SORT_2 init_19_arg_1 = var_5; [L114] state_18 = init_19_arg_1 [L115] SORT_2 init_21_arg_1 = var_5; [L116] state_20 = init_21_arg_1 [L117] SORT_2 init_23_arg_1 = var_5; [L118] state_22 = init_23_arg_1 [L119] SORT_2 init_25_arg_1 = var_5; [L120] state_24 = init_25_arg_1 [L121] SORT_2 init_27_arg_1 = var_5; [L122] state_26 = init_27_arg_1 [L123] SORT_2 init_29_arg_1 = var_5; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_32_arg_1 = var_30; [L126] state_31 = init_32_arg_1 [L127] SORT_1 init_34_arg_1 = var_30; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_30; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_38_arg_1 = var_30; [L132] state_37 = init_38_arg_1 [L133] SORT_1 init_40_arg_1 = var_30; [L134] state_39 = init_40_arg_1 [L135] SORT_1 init_42_arg_1 = var_30; [L136] state_41 = init_42_arg_1 [L137] SORT_1 init_44_arg_1 = var_30; [L138] state_43 = init_44_arg_1 [L139] SORT_1 init_46_arg_1 = var_30; [L140] state_45 = init_46_arg_1 [L141] SORT_1 init_48_arg_1 = var_30; [L142] state_47 = init_48_arg_1 [L143] SORT_1 init_50_arg_1 = var_30; [L144] state_49 = init_50_arg_1 [L145] SORT_1 init_52_arg_1 = var_30; [L146] state_51 = init_52_arg_1 [L147] SORT_1 init_54_arg_1 = var_30; [L148] state_53 = init_54_arg_1 [L149] SORT_1 init_56_arg_1 = var_30; [L150] state_55 = init_56_arg_1 [L151] SORT_1 init_58_arg_1 = var_30; [L152] state_57 = init_58_arg_1 [L153] SORT_1 init_60_arg_1 = var_30; [L154] state_59 = init_60_arg_1 [L155] SORT_1 init_62_arg_1 = var_30; [L156] state_61 = init_62_arg_1 [L157] SORT_1 init_64_arg_1 = var_30; [L158] state_63 = init_64_arg_1 [L159] SORT_1 init_66_arg_1 = var_30; [L160] state_65 = init_66_arg_1 [L161] SORT_1 init_68_arg_1 = var_30; [L162] state_67 = init_68_arg_1 [L163] SORT_1 init_70_arg_1 = var_30; [L164] state_69 = init_70_arg_1 [L165] SORT_1 init_72_arg_1 = var_30; [L166] state_71 = init_72_arg_1 [L167] SORT_1 init_74_arg_1 = var_30; [L168] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_30=0, var_5=0, var_75=0, var_77=50, var_81=10, var_85=1, var_91=4, var_93=2] [L171] input_82 = __VERIFIER_nondet_uchar() [L172] input_82 = input_82 & mask_SORT_1 [L173] input_92 = __VERIFIER_nondet_uchar() [L174] input_92 = input_92 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_122 = __VERIFIER_nondet_uchar() [L178] input_122 = input_122 & mask_SORT_1 [L179] input_125 = __VERIFIER_nondet_uchar() [L180] input_125 = input_125 & mask_SORT_1 [L181] input_126 = __VERIFIER_nondet_uchar() [L182] input_126 = input_126 & mask_SORT_1 [L183] input_127 = __VERIFIER_nondet_uchar() [L184] input_127 = input_127 & mask_SORT_1 [L185] input_128 = __VERIFIER_nondet_uchar() [L186] input_128 = input_128 & mask_SORT_1 [L187] input_147 = __VERIFIER_nondet_uchar() [L188] input_147 = input_147 & mask_SORT_1 [L189] input_148 = __VERIFIER_nondet_uchar() [L190] input_148 = input_148 & mask_SORT_1 [L191] input_170 = __VERIFIER_nondet_uchar() [L192] input_170 = input_170 & mask_SORT_1 [L193] input_174 = __VERIFIER_nondet_uchar() [L194] input_174 = input_174 & mask_SORT_1 [L195] input_216 = __VERIFIER_nondet_uchar() [L196] input_216 = input_216 & mask_SORT_1 [L197] input_219 = __VERIFIER_nondet_uchar() [L198] input_219 = input_219 & mask_SORT_1 [L199] input_240 = __VERIFIER_nondet_uchar() [L200] input_261 = __VERIFIER_nondet_uchar() [L203] SORT_3 var_76_arg_0 = var_75; [L204] SORT_2 var_76_arg_1 = state_28; [L205] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L206] var_76 = var_76 & mask_SORT_4 [L207] SORT_4 var_78_arg_0 = var_76; [L208] SORT_4 var_78_arg_1 = var_77; [L209] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L210] SORT_1 var_79_arg_0 = ~state_73; [L211] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L212] SORT_1 var_79_arg_1 = ~var_78; [L213] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L214] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L215] var_79 = var_79 & mask_SORT_1 [L216] SORT_1 bad_80_arg_0 = var_79; [L217] CALL __VERIFIER_assert(!(bad_80_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 18:57:50,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 18:57:53,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:57:53,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:57:53,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:57:53,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:57:53,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:57:53,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:57:53,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:57:53,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:57:53,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:57:53,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:57:53,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:57:53,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:57:53,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:57:53,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:57:53,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:57:53,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:57:53,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:57:53,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:57:53,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:57:53,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:57:53,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:57:53,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:57:53,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:57:53,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:57:53,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:57:53,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:57:53,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:57:53,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:57:53,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:57:53,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:57:53,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:57:53,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:57:53,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:57:53,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:57:53,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:57:53,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:57:53,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:57:53,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:57:53,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:57:53,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:57:53,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 18:57:53,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:57:53,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:57:53,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:57:53,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:57:53,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:57:53,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:57:53,567 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:57:53,567 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:57:53,567 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:57:53,567 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:57:53,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:57:53,569 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:57:53,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:57:53,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:57:53,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:57:53,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:57:53,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:57:53,571 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 18:57:53,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 18:57:53,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 18:57:53,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:57:53,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:57:53,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:57:53,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:57:53,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 18:57:53,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:57:53,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:53,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:57:53,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:57:53,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:57:53,575 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 18:57:53,576 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 18:57:53,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:57:53,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:57:53,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 18:57:53,577 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-20 18:57:54,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:57:54,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:57:54,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:57:54,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:57:54,041 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:57:54,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:57:57,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:57:58,014 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:57:58,014 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:57:58,031 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/5d8b93aad/64198ef2651c4d888ab148a4f2eea77b/FLAG38cb80014 [2022-11-20 18:57:58,059 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/data/5d8b93aad/64198ef2651c4d888ab148a4f2eea77b [2022-11-20 18:57:58,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:57:58,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:57:58,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:58,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:57:58,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:57:58,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:58,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b079b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58, skipping insertion in model container [2022-11-20 18:57:58,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:58,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:57:58,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:57:58,344 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-20 18:57:58,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:58,738 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:57:58,750 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-20 18:57:58,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:58,903 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:57:58,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58 WrapperNode [2022-11-20 18:57:58,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:58,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:58,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:57:58,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:57:58,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:58,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,078 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-20 18:57:59,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:59,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:57:59,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:57:59,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:57:59,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:57:59,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:57:59,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:57:59,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:57:59,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (1/1) ... [2022-11-20 18:57:59,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:59,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:57:59,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:57:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:57:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:57:59,810 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:57:59,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:58:02,833 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:58:02,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:58:02,842 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:58:02,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:02 BoogieIcfgContainer [2022-11-20 18:58:02,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:58:02,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:58:02,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:58:02,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:58:02,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:58" (1/3) ... [2022-11-20 18:58:02,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6817ec2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:58:02, skipping insertion in model container [2022-11-20 18:58:02,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:58" (2/3) ... [2022-11-20 18:58:02,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6817ec2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:58:02, skipping insertion in model container [2022-11-20 18:58:02,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:58:02" (3/3) ... [2022-11-20 18:58:02,857 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-20 18:58:02,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:58:02,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:58:02,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:58:02,966 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ce00b19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:58:02,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:58:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 18:58:02,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:02,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 18:58:02,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 18:58:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983216390] [2022-11-20 18:58:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:03,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 18:58:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:03,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 18:58:03,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 18:58:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 18:58:03,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:03,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:03,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:03,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983216390] [2022-11-20 18:58:03,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983216390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:03,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:58:03,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:58:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894535712] [2022-11-20 18:58:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 18:58:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 18:58:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 18:58:03,802 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:04,322 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 18:58:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 18:58:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 18:58:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:04,334 INFO L225 Difference]: With dead ends: 20 [2022-11-20 18:58:04,335 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 18:58:04,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:58:04,342 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:04,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 18:58:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 18:58:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 18:58:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 18:58:04,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 18:58:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:04,378 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 18:58:04,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 18:58:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 18:58:04,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:04,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:04,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 18:58:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 18:58:04,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 18:58:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:04,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647976448] [2022-11-20 18:58:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:04,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 18:58:04,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:04,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 18:58:04,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 18:58:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:05,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 18:58:05,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:06,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:07,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:07,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647976448] [2022-11-20 18:58:07,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647976448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:07,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [326273047] [2022-11-20 18:58:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:07,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:07,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:07,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:07,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 18:58:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:09,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 18:58:09,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:09,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:14,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [326273047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:14,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722434175] [2022-11-20 18:58:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:14,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:14,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:14,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 18:58:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:15,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 18:58:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:15,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:16,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722434175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:16,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 18:58:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 13 [2022-11-20 18:58:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530808669] [2022-11-20 18:58:16,535 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 18:58:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 18:58:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=106, Unknown=1, NotChecked=0, Total=156 [2022-11-20 18:58:16,538 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:16,651 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-20 18:58:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 18:58:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:16,653 INFO L225 Difference]: With dead ends: 14 [2022-11-20 18:58:16,653 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 18:58:16,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=62, Invalid=119, Unknown=1, NotChecked=0, Total=182 [2022-11-20 18:58:16,655 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:16,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-11-20 18:58:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 18:58:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 18:58:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 18:58:16,660 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 18:58:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:16,661 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 18:58:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 18:58:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 18:58:16,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:16,662 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 18:58:16,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:16,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:17,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:17,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 18:58:17,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:17,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660923068] [2022-11-20 18:58:17,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:17,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 18:58:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:17,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 18:58:17,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 18:58:18,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:18,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:18,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 18:58:18,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:19,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:21,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660923068] [2022-11-20 18:58:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660923068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:21,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [793939856] [2022-11-20 18:58:21,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:21,399 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:21,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:21,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:21,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 18:58:23,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:23,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:23,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 18:58:23,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:24,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:46,768 WARN L233 SmtUtils]: Spent 16.10s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 18:58:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [793939856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537638083] [2022-11-20 18:58:46,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 18:58:46,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:58:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:58:46,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:58:46,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 18:58:48,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 18:58:48,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:58:48,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 18:58:48,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:49,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:58:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537638083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:56,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 18:58:56,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10, 10] total 32 [2022-11-20 18:58:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684102435] [2022-11-20 18:58:56,129 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 18:58:56,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 18:58:56,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 18:58:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=712, Unknown=2, NotChecked=0, Total=992 [2022-11-20 18:58:56,136 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:57,534 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-20 18:58:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 18:58:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 18:58:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:57,536 INFO L225 Difference]: With dead ends: 20 [2022-11-20 18:58:57,536 INFO L226 Difference]: Without dead ends: 18 [2022-11-20 18:58:57,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=397, Invalid=1007, Unknown=2, NotChecked=0, Total=1406 [2022-11-20 18:58:57,539 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:57,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-11-20 18:58:57,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-20 18:58:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 18:58:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-20 18:58:57,576 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-11-20 18:58:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:57,576 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-20 18:58:57,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:58:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-20 18:58:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 18:58:57,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:57,577 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-20 18:58:57,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:57,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:58,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:58,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:58,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-20 18:58:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471524037] [2022-11-20 18:58:58,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 18:58:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 18:58:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:58,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 18:58:58,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 18:59:00,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 18:59:00,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:59:00,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 18:59:00,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:02,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:59:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:19,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:59:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471524037] [2022-11-20 18:59:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471524037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:59:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846529093] [2022-11-20 18:59:19,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 18:59:19,068 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:59:19,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:59:19,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:59:19,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-20 18:59:27,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 18:59:27,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:59:28,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 18:59:28,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:29,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:59:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:42,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846529093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:59:42,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588948151] [2022-11-20 18:59:42,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 18:59:42,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:59:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:59:42,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:59:42,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 18:59:44,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 18:59:44,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:59:44,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-20 18:59:44,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:59:47,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:00:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:06,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588948151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:00:06,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:00:06,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 41 [2022-11-20 19:00:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343433511] [2022-11-20 19:00:06,974 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:00:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 19:00:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:00:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 19:00:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1197, Unknown=3, NotChecked=0, Total=1640 [2022-11-20 19:00:06,978 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:20,432 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-20 19:00:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 19:00:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 19:00:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:20,434 INFO L225 Difference]: With dead ends: 33 [2022-11-20 19:00:20,434 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 19:00:20,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 14 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=803, Invalid=2386, Unknown=3, NotChecked=0, Total=3192 [2022-11-20 19:00:20,438 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:20,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 37 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 126 Unchecked, 0.5s Time] [2022-11-20 19:00:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 19:00:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-20 19:00:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-11-20 19:00:20,455 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 17 [2022-11-20 19:00:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:20,455 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-11-20 19:00:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:00:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-11-20 19:00:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 19:00:20,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:20,457 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2022-11-20 19:00:20,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:20,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:20,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:00:21,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 637038473, now seen corresponding path program 4 times [2022-11-20 19:00:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:00:21,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520225394] [2022-11-20 19:00:21,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:00:21,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:00:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:00:21,082 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:00:21,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 19:00:25,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:00:25,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:00:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 9584 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-20 19:00:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:00:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:00:35,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:01:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:01:19,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:01:19,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520225394] [2022-11-20 19:01:19,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520225394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:01:19,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1675753960] [2022-11-20 19:01:19,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 19:01:19,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:01:19,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:01:19,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:01:19,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93aea855-2149-4db9-96af-54042fb0bea6/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-20 19:01:42,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 19:01:42,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:01:42,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 9584 conjuncts, 2292 conjunts are in the unsatisfiable core [2022-11-20 19:01:42,631 INFO L286 TraceCheckSpWp]: Computing forward predicates...